Improvement in elevators



Z. C. FAVOR.

BLEVATOR.

Nq 112,573. Patented Mar. 14. 1871.

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ZEBULON` (IVFVOR, 0F CHICAGO,` ILLINOIS, ASSIGNOR TO IIIMSELF AND Osons o. cnAsE. or SAME PLAGE.

Letters Patent No. 112,573, dated March 14, 1871.

IMPROVEMENT IN ELEVATORS.V

The Schedule referred to in these Letters Patent and naklngppart of the same.

To allwhom ttmcy concern.-

Be itknown that I, ZnBULoN C. FAVOR, of Ohicago, in the county of Cook and State of Illinois,

vhave inventeda new and useful Improvement in Elevators aud' I do hereby declare that the following is i a full, clear, and exactldescription thereof', which will `,enable others skilled in the art to make and use the same, reference being had to the accompanying'drawing forming part of this specitication. i The object of' this invent-ion is to provide means for elevating guests andbaggage at hotels,` goods and custorners at stores, and for all purposes to which elevators or` elevating-machines may be applied; and

It consists in the construction and arrangement l hereinafter described.

`In the accompanying drawing- I l Figure 1 representsavertical section of the elevator taken on the line :l: x of ig."2.

` endless ropes `or chains arrangedso as toa'lways remain in a perpendicular position and correspond with the different oors oi' the building, thus providing. an ascending and a descending car foreach floor, with a lpartition between `the cars for separating them and cutting oli` the view from one to the other.

A is the -well or openin'gin which the cars are made to operate, which may extend from the bottomto the B represents thecar, of which there or less in number;

O are the-ropes from which the cars are supported;

may be more D are the wheels .or pulleys (one'pair above and one below) around which the ropes pass.

E is the shaft of the two lower rope wheels, which r extend across `the welland under which the cars pass.

On the outer end ot"thi`s shaft E there is a wormwheel, F.. l.

Gr is a screw which engages with the wormfwheel n n a D l. F, winch screw is revolved by means ot a belt on the plied for operating the elevator. r

The cars are suspended from the rope or ropes on each side by means of a shaft or rod, which extends across the top of each car, the ends being attached to the respective ropes by boxes, so that the car will always maintain a perpendicular position.

The boxes in which the car-shafts are supported are1 secured to the ropes by clasps I, as seen in figs. 3 an 4.

As seen in those figures two ropes instead of one may be used, bridged together-'at intervals, as seen 'at J J, so as to prevent the possibility of slipping, the pulley being made double for that purpose, as represented, and provided with cogs K, which Work between the bridges.

The power may be applied at either end of the bot- 1 Itom shaft, as may be found most convenient.

By the use of the worm-gear for the applicatiou'of the power it will be seen that there can be no back motion to the gearing, and Ythat when the cars are stopped they will remain at the proper point as long ias may he desired, thus avoiding the necessity of a brake of any description.

lThe two upper rope wheelsor pulleys have separate arbors, (confined in the sides of the ywell or opening,) on which they revolve, thus allowing the cars, as they are carried over and changed from an ascending to a descending motion, to pass between them.

At the bottom'of cach car, on each side, there is a projecting lng,'L, seen in g. 2, which runs in grooves in the sides of the well, for keeping the car steady and .in the proper position. Y

N is a partition between the oors of the building,

which Aseparate the cars'as they 'pass up and down.

The elevator can be regulatedin its movements by signals to the engineer, or by shiftingl the driving-belt from thetight to a loose pullcy,and lvice versa.

The advantages of this 1mode of constructing elevators will bereadil y understood by all who are acquainted with this description of machinery.

HavingA thus described my invention,A

I claim as new and desire to secure by Letters Iat entl. The improved elevator, formed by cars B B,

wheels D D, axles E E, ropes O O, partition N wormshaft g, all arranged substantially as specilied. n

2. The partition N, for separating the ascending and descending cars, substantially as described.

Witnesses: 4 ZEBULON C. FAVOR.

OLIN J. GARY, W. J. FA1RMAN. 

